Phish Hook Button - Manual / Sideloading Installation

In this article we will learn how to manually install (also called sideloading) the Microsoft 365 (formerly Office 365) Outlook Phish Hook add-in button.

The Phish Hook Button add-in for Microsoft Outlook / Microsoft 365 (formerly Office 365) gives end-users the ability to report suspicious emails. The button allows your employees to take an active role in managing the problem of Phishing and other types of malicious emails. This has the benefit of providing your IT/security team with early warnings of possible phishing attacks or malicious emails, allowing them to take effective action to prevent security or network compromise.

The button will also track if your users report our simulated phishing emails, so you can see which users are successfully engaging and identifying potentially malicious emails.

From the Phishing Tackle Dashboard:

1. Click "Organisation" > "Settings" on the main menu
2. Click "PhishHook Button"
3. Check "Enabled"
4. (Optional) Adjust the default settings to match your organisation
   
   • For more information, see PhishHook Button - Overview
5. Download the Microsoft 365 (formerly Office 365) Manifest File and store in a memorable location

On the user's computer:

1. Open Microsoft Outlook
   
2. Click "Get Add-Ins" on the main Outlook Ribbon
   
   
   
   
   • NOTE: Your Outlook ribbon may look different depending on what Add-Ins are currently installed 
     From the Add-Ins page:
     
     
3. Click "My Add-Ins"
4. Click "Add a Custom add-in"
5. Click "Add from file..."
   
   
6. Select the Manifest File from the location it was downloaded earlier
   
   
7. Click "Install"

You will then see the Phish Hook Add-In under your Custom add-ins section:

On the main ribbon you now have the Phish Hook Button!

From now on the user can click this button to report suspicious emails demonstrating their engagement with phishing awareness and also to report to your relevant support departments.

For further reading on Sideloading Microsoft 365 (formerly Office 365) Outlook add-ins, please see this Microsoft article.